Can some one tell me why water always come out underneath the car when the car stops.?

Question

I understand that water would come out after using air conditioning. But I see water coming out underneath every time I stop my car, even I just move the car from one spot to another in the same parking lot. Is this normal or something needed to be fixed? Thanks fro your help

Answer 1

Gasoline contains water and H2O is a bi product from the combustion process, so all internal combustion engines give off water in the exhaust (tailpipe). If you have water underneath the engine, there may be several reasons. Your HVAC compressor/condenser may be giving it off or its possible that you may have a leak. If you are not comfortable with this explanation you may want to take it to a service technician just to inspect it. The other thing, how old is your car? In newer vehicles the compressor may run even without the A/C on.

Answer 2

Here is another point that other respondants have nto addressed. You mention water even though you move from one parking spot to another . . . did you check to see if it is water coming from the exhaust system? when a car is started, all the condensation that forms in the exhaust gets blown out, sometimes resulting in water which can be misconstrued as something else when the vehicle is moving. Try driving the vehicle a bit and see if it stops. Otherwise, go take a look under the car when its running and see where its coming from

Answer 3

The AC system operates in both the cooling and heating cycles and it uses an evaporator to remove water from the air which is then removed through a tube exiting the firewall. If the water spot appears to be in the same location under the vehicle and in the vicinity of the firewall this is the reason. moving the vehicle will cause the collected water to shift and exit through the tube. If you do not notice any rapid loss of coolant from you reservoir and the spot on the ground appears to be clear and when touched does not have an oily feel to it then it is the normal function of the AC system.

Answer 4

Depends on your car, but if it has a fully automatic hvac system (one where you set the temp and it maintains the temp without any input from you) then yes it's completely normal, because you A/C is always on working with your heater to maintain temp.

A sure fire way of checking is to take a paper towel and absorb the leak without rubbing. If it's clear and odorless it's water from the HVAC system If it has an odor or color touch it. If it has an oily consistancy, it's a leak or either gasoline, coolant, brake fluid, motor oil, or trans fluid.

But I think you are worrying about nothing. Just enjoy driving your vehicle.

Answer 5

it may have a leak that's allowing water to get in to the car,and when you move it ,,this allows some of it to come out,the most common place for this is the rain drain offs built in to the cars body,,they may be clogged up with leaves,and old debris,and when you move it it lets some of it out,,this is the area on the side of the vehicle on each door post that the water drains down through from a rain or a good wash,you might need a good manual to tell you how to clean them for you r car,since you didn't tell us what kind of car it is,,good luck,i hope this help,s.

Answer 6

the area that the water comes of for the air conditioner has a drain hole or hose. This could be plugged. Have it checked as bacteria or mold could congregate there and possibly cause illness. This also could cause rust. The other answers seemed to cover the other possibilities, except maybe rain...

Answer 7

Do you start the car with the ac on? If you do, thats enough to make the condensation form. A word of advice, try to avoid starting the vehicle with the ac controls on because this tends to prematurely wear the ac compressor.

Answer 8

Condensation can come out of the AC evaporator even when the unit is not operating. If it is clear water I would not give it much concern. If it is coolant or oil, then you have an issue to deal with.

Answer 9

Sometimes water accumulates in pockets, like under the windshield wiper housing, when you move the car is causes some of it to spill onto the ground.

Answer 10

in basic terms like "isitme", my interior of reach tester will flatly refuse to verify any vehicle which turns up with under-seal slapped on so he can not study the form he desires to. If something turns up like that he sends it away and tells whoever provides it to scrape the muck off if he needs him to objective it. He has a acceptance of being employer yet honest, and if he passes a vehicle you be responsive to it quite is been performed good. i might wish your MoT testers are the two as thorough, although who's accustomed to?